package cn.crm.web.controller.common;


import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.security.NoSuchAlgorithmException;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.List;
import java.util.UUID;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import cn.crm.system.domain.pojo.entity.MinioPojo;
import io.minio.*;
import io.minio.errors.MinioException;
import lombok.Cleanup;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import cn.crm.common.config.RuoYiConfig;
import cn.crm.common.constant.Constants;
import cn.crm.common.core.domain.AjaxResult;
import cn.crm.common.utils.StringUtils;
import cn.crm.common.utils.file.FileUploadUtils;
import cn.crm.common.utils.file.FileUtils;
import cn.crm.framework.config.ServerConfig;
import org.springframework.web.multipart.commons.CommonsMultipartFile;

/**
 * 通用请求处理
 * 
 * @author ruoyi
 */
@RestController
@RequestMapping("/common")
public class CommonController
{
    private static final Logger log = LoggerFactory.getLogger(CommonController.class);

    @Autowired
    private ServerConfig serverConfig;
    @Autowired
    private MinioClient minioClient;
    @Autowired
    private MinioPojo minioPojo;
    private static final String FILE_DELIMETER = ",";

    /**
     * 通用下载请求
     *
     * @param fileName 文件名称
     * @param delete 是否删除
     */
    @GetMapping("/download")
    public void fileDownload(String fileName, Boolean delete, HttpServletResponse response, HttpServletRequest request)
    {
        try
        {
            if (!FileUtils.checkAllowDownload(fileName))
            {
                throw new Exception(StringUtils.format("文件名称({})非法，不允许下载。 ", fileName));
            }
            String realFileName = System.currentTimeMillis() + fileName.substring(fileName.indexOf("_") + 1);
            String filePath = RuoYiConfig.getDownloadPath() + fileName;

            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, realFileName);
            FileUtils.writeBytes(filePath, response.getOutputStream());
            if (delete)
            {
                FileUtils.deleteFile(filePath);
            }
        }
        catch (Exception e)
        {
            log.error("下载文件失败", e);
        }
    }

    /**
     * 通用上传请求（单个）
     */
    @PostMapping("/upload")

    public AjaxResult uploadFile(MultipartFile file) throws Exception
   {
//        try
//        {
//            // 上传文件路径
//            String filePath = RuoYiConfig.getUploadPath();
//            // 上传并返回新文件名称
//            String fileName = FileUploadUtils.upload(filePath, file);
//            String url = serverConfig.getUrl() + fileName;
//            AjaxResult ajax = AjaxResult.success();
//            ajax.put("url", url);
//            ajax.put("fileName", fileName);
//            ajax.put("newFileName", FileUtils.getName(fileName));
//            ajax.put("originalFilename", file.getOriginalFilename());
//            return ajax;
//        }
//        catch (Exception e)
//        {
//            return AjaxResult.error(e.getMessage());
//        }
       String bucketName=minioPojo.getBucketName();
       log.debug("bucketName",bucketName);
       try(InputStream inputStream = file.getInputStream()){
//判断桶是否存在
           boolean bucketExists = minioClient.bucketExists(BucketExistsArgs.builder().bucket(bucketName).build());
           if (!bucketExists){
//                如果不存在，就创建桶
               minioClient.makeBucket(MakeBucketArgs.builder().bucket(bucketName).build());
           }
//            本地时间，具体到年、月、日
           String yyyymmdd = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd"));
           //防止名字重复
           String uuid= UUID.randomUUID().toString();
           String filename = yyyymmdd+"/"+uuid+file.getOriginalFilename();
//          加一个/表示创建一个文件夹
           minioClient.putObject(PutObjectArgs.builder().
                   bucket(bucketName).
                   object(filename).
         stream(file.getInputStream(), file.getSize(), -1).
//                    文件上传的类型，如果不指定，那么每次访问时都要先下载文件
        contentType(file.getContentType()).
                           build());
           String url= minioPojo.getUrl()+"/"+minioPojo.getBucketName()+"/"+filename;
           AjaxResult ajax = AjaxResult.success();
           ajax.put("url", url);
           ajax.put("fileName", "/"+minioPojo.getBucketName()+"/"+filename);
           ajax.put("newFileName", FileUtils.getName(filename));
           ajax.put("originalFilename", file.getOriginalFilename());
           return ajax;
       } catch (Exception e) {
           @Cleanup   InputStream is =  file.getInputStream();
           throw new RuntimeException("文件上传失败", e);
       }
   }





    @DeleteMapping("/delete")
    public AjaxResult deleteFile(@RequestParam String url) {
        try {
            // 提取文件路径
            String filePath = extractFilePathFromUrl(url);

            minioClient.removeObject(RemoveObjectArgs.builder()
                    .bucket(minioPojo.getBucketName())
                    .object(filePath)
                    .build());
        } catch (Exception e) {
            e.printStackTrace();
            throw new RuntimeException(url + "文件删除失败");
        }
        return AjaxResult.success();
    }

    private String extractFilePathFromUrl(String url) {
        // 找到第三个斜杠的位置
        int firstSlashIndex = url.indexOf('/');
        int secondSlashIndex = url.indexOf('/', firstSlashIndex + 1);
        int thirdSlashIndex = url.indexOf('/', secondSlashIndex + 1);
        int threeIndex = url.indexOf('/', thirdSlashIndex + 1);
        if (threeIndex != -1) {
            // 从第三个斜杠的下一个字符开始截取
            return url.substring(threeIndex + 1);
        } else {
            // 如果没有找到第三个斜杠，返回空字符串或其他默认值
            return "";
        }
    }

    /**
     * 通用上传请求（多个）
     */
    @PostMapping("/uploads")
    public AjaxResult uploadFiles(List<MultipartFile> files) throws Exception
    {
        try
        {
            // 上传文件路径
            String filePath = RuoYiConfig.getUploadPath();
            List<String> urls = new ArrayList<String>();
            List<String> fileNames = new ArrayList<String>();
            List<String> newFileNames = new ArrayList<String>();
            List<String> originalFilenames = new ArrayList<String>();
            for (MultipartFile file : files)
            {
                // 上传并返回新文件名称
                String fileName = FileUploadUtils.upload(filePath, file);
                String url = serverConfig.getUrl() + fileName;
                urls.add(url);
                fileNames.add(fileName);
                newFileNames.add(FileUtils.getName(fileName));
                originalFilenames.add(file.getOriginalFilename());
            }
            AjaxResult ajax = AjaxResult.success();
            ajax.put("urls", StringUtils.join(urls, FILE_DELIMETER));
            ajax.put("fileNames", StringUtils.join(fileNames, FILE_DELIMETER));
            ajax.put("newFileNames", StringUtils.join(newFileNames, FILE_DELIMETER));
            ajax.put("originalFilenames", StringUtils.join(originalFilenames, FILE_DELIMETER));
            return ajax;
        }
        catch (Exception e)
        {
            return AjaxResult.error(e.getMessage());
        }


  }

    /**
     * 本地资源通用下载
     */
    @GetMapping("/download/resource")
    public void resourceDownload(String resource, HttpServletRequest request, HttpServletResponse response)
            throws Exception
    {
        try
        {
            if (!FileUtils.checkAllowDownload(resource))
            {
                throw new Exception(StringUtils.format("资源文件({})非法，不允许下载。 ", resource));
            }
            // 本地资源路径
            String localPath = RuoYiConfig.getProfile();
            // 数据库资源地址
            String downloadPath = localPath + StringUtils.substringAfter(resource, Constants.RESOURCE_PREFIX);
            // 下载名称
            String downloadName = StringUtils.substringAfterLast(downloadPath, "/");
            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, downloadName);
            FileUtils.writeBytes(downloadPath, response.getOutputStream());
        }
        catch (Exception e)
        {
            log.error("下载文件失败", e);
        }
    }
}
